Water permeability of cracked strain-hardening cement-based composites

被引：38
作者：
Wagner, Christian [1 ]
Villmann, Beate [1 ]
Slowik, Volker [1 ]
Mechtcherine, Viktor [2 ]
机构：
[1] Leipzig Univ Appl Sci, Fac Civil Engn, PF 301166, D-04251 Leipzig, Germany
[2] Tech Univ Dresden, Inst Construct Mat, Dresden, Germany
来源：
CEMENT & CONCRETE COMPOSITES | 2017年 / 82卷
关键词：
SHCC; Strain hardening; Crack pattern; Water permeability; CONCRETE; DURABILITY; SHCC;
D O I：
10.1016/j.cemconcomp.2017.06.003
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Strain-hardening cement-based composites (SHCC) are characterized by the formation of numerous fine cracks under tensile loading. The water permeability of the cracked material and, consequently, the durability of respective structural members will strongly depend on these cracks. Experimental investigations into the water permeability of both SHCC specimens pre-cracked under uniaxial tension and SHCC overlays on cracked concrete substrate were performed. It is proposed to determine certain crack pattern parameters which may be linked to the theoretical water permeability of the cracked material. For this linking, a weighting function for the observed crack widths has been derived on the basis of the Hagen-Poiseuille equation. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：234 / 241
页数：8
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